"You need to get some fucking common sense. You're too damned smart to be acting like such an idiot."
"You think you are so mature... Really, you're one of the most immature people I have ever met."
"You... I don't know what to say, it's alternately go away and come back."
"You can just fuck off, I no longer give a shit about what you think or say. You aren't worth it."
"You need to accept that I have changed. Stop talking to the person you remember, they are gone. I'm here now."
Problem is, these are likely to change at random. And so I dare not say what is on my mind. I tell the truth, but the truth is relative to the time I tell it in. What is the truth from me one minute may be false the next. And if I want to not hurt people's feelings, I can't say what I really mean most of the time. If nothing else, they would grow annoyed with my habit of contradicting myself every few minutes.
Damned mood swings.